A region of the Middle East arching across the northern part of the Syrian Desert and extending from the Nile Valley to the Tigris and Euphrates rivers. The civilizations of Egypt, Phoenicia, Assyria, and Babylonia developed in this area, which was also the site of numerous migrations and invasions
a geographical area of fertile land in the Middle East stretching in a broad semicircle from the Nile to the Tigris and Euphrates